Home / 120,454.31-180,674.16-31,705.85

Finding the Fourth Proportional to 120,454.31, 180,674.16 and 31,705.85

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Solution

The fourth proportional to 120,454.31, 180,674.16 and 31,705.85 is: 47,556.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,454.31 : 180,674.16 = 31,705.85 : x
  2. Step 2: Convert to fraction form
    120,454.31/180,674.16 = 31,705.85/x
  3. Step 3: Cross multiply
    120,454.31x = 180,674.16 × 31,705.85
  4. Step 4: Simplify right side
    120,454.31x = 5,728,426,912.47
  5. Step 5: Solve for x
    x = 5,728,426,912.47/120,454.31
  6. Step 6: Final answer
    x = 47,556.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.